This thread is for listing useful tools and resources for modders. Little low on time, so just the one for now to get the ball rolling. I'll expand this post later, this is just to reserve the space (we need a topic like this )
And yes, that exporter is old, I was working on a new one that was already working a ton better a while back, wonder where I put it, probably on an old windows partition...
Specular Map Generator
This came with another program that I forget the name of, but Ive uploaded this part of it here. This is great for creating specular maps to re-inforce your textures. They can also be used as bump maps to give similar results to current BZ2 buildings. http://www.mediafire.com/download.php?qqr7ett9dwa8c1o
(Might I suggest updating the OP with a format similar to this?)